Quick questions.
How do you know you are only putting out 5W? How are
you measuring that?
Are you working into a dummy load? Do you have an antenna tuner in
line, even to a dummy load? The ubitx is very sensitive to antenna
matching for maximum output power.
Do you have an oscilloscope by any chance?
tim ab0wr
On Sat, 12 May 2018 10:37:13 -0700
"KE0GYC" <dragonfanatic90@...> wrote:
In am getting a bit under 5w on 80 and 40m.? Half that on upper bands.
Most seem to be getting 10w+ on 40m.
I experimented with boosting the voltage to my PA-PWR line, but even
pushing 24V to the PA only barely got me to 10w, and my audio was
distorted at that point.
Something must be awry somewhere, I am just at a loss for where to
look.
I did poke around with an old RF probe, and the RF level did not
change before or after the filters, so my filters are not attenuating
my signal.
It looks like the RF voltage into the IRF510 was roughly in line with
the following photo at around 1.5V by C94.? RV1 is turned all the way
up to get that much.
